agent-usage-guard - Claude Code mod to protect your usage window

Show HN: agent-usage-guard – a Claude Code mod to protect your usage window

agent-usage-guard is a Claude Code mod that prevents runaway spending of your five-hour usage window. It monitors live plan usage and holds subagent fan-out, heavy-context prompts, and retry loops before they consume your quota. Acting before spend occurs, it asks for approval via Claude Code's own dialog or refuses with a reason when no one can answer. Features include plan-aware thresholds, cross-session agent limits, and local privacy-minimal operation. Install via the plugin marketplace and run /agent-guard to see what it sees.